PROLINK Modem 9000 用户手册
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Section Four: Web-Based Management
4.7.3 NAT Configuration
The NAT Configuration page allows users to set the configuration for
the Network Address Translation.
the Network Address Translation.
NAT Configuration
The NAT option only maps single WAN IP address to the local PC IP
address. It is peer-to-peer mapping. (1x1) For each PVC, only one local PC
IP address can be associated with each WAN PVC. Click the link Session
Name Configuration to add the session name for each PVC.
Q: Since only one PVC is mapped to one local PC IP address, why can I
input more than one IP address for one NAT session?
The NAT option only maps single WAN IP address to the local PC IP
address. It is peer-to-peer mapping. (1x1) For each PVC, only one local PC
IP address can be associated with each WAN PVC. Click the link Session
Name Configuration to add the session name for each PVC.
Q: Since only one PVC is mapped to one local PC IP address, why can I
input more than one IP address for one NAT session?
A: Even though you can, only the first IP address of each session takes effect.
NAPT Configuration
The NAPT option maps the IP address and UDP/TCP port ID of the WAN
PVC to the IP address and UDP/TCP port ID of the local PCs. (1xN). It is the
multiple-mapping mechanism. More than one local PC can be associated
with one WAN PVC.
Dynamic NAPT:The default setting is Dynamic NAPT. It provides dynamic
Network Address Translation capability between LAN and multiple WAN
connections, and the LAN traffic is routed to appropriate WAN
connections based on the destination IP addresses and Route Table. This
eliminates the need for the static NAT session configuration between
multiple LAN clients and multiple WAN connections. When the Dynamic
NAPT is chosen, there is no need to configure the NAT Session and NAT
Session Name Configuration.
The NAPT option maps the IP address and UDP/TCP port ID of the WAN
PVC to the IP address and UDP/TCP port ID of the local PCs. (1xN). It is the
multiple-mapping mechanism. More than one local PC can be associated
with one WAN PVC.
Dynamic NAPT:The default setting is Dynamic NAPT. It provides dynamic
Network Address Translation capability between LAN and multiple WAN
connections, and the LAN traffic is routed to appropriate WAN
connections based on the destination IP addresses and Route Table. This
eliminates the need for the static NAT session configuration between
multiple LAN clients and multiple WAN connections. When the Dynamic
NAPT is chosen, there is no need to configure the NAT Session and NAT
Session Name Configuration.